An independent investigation into the death of 13 women in India after mass sterilization surgeries found the doctor and his staff used the same needles for all the procedures and never changed their gloves.

A paralyzed Bulgarian man can walk again after receiving revolutionary treatment in Poland in a breakthrough hailed by one of the British scientists responsible as “more impressive than a man walking on the Moon.”

For the roughly 6,000 people each year who give up a kidney to someone in need of a transplant in the United States, a new study finds that generosity may come at a price: a roughly tenfold increased risk of kidney failure in the 15 years following their donation.